06b6ec42b9
This adds the C WASI implementation as a new crate, wasmtime-wasi-c, and adds a command-line flag to the wasmtime command-line driver to select which WASI implementation to use.
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
#include <emscripten.h>
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#include "wasmtime_ssp.h"
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#include "../src/posix.h"
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static __thread struct fd_table curfds_pointee;
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int main(int argc, char *argv[]) {
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return 0;
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}
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void handleFiles(void) {
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struct fd_table *curfds = &curfds_pointee;
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fd_table_init(curfds);
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// Prepopulate curfds with stdin, stdout, and stderr file descriptors.
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if (!fd_table_insert_existing(curfds, 0, 0))
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__builtin_trap();
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if (!fd_table_insert_existing(curfds, 1, 1))
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__builtin_trap();
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if (!fd_table_insert_existing(curfds, 2, 2))
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__builtin_trap();
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EM_ASM(" \
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const imports = { wasi_unstable: WASIPolyfill }; \
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let file = document.getElementById('input').files[0]; \
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let file_with_mime_type = file.slice(0, file.size, 'application/wasm'); \
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let response = new Response(file_with_mime_type); \
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wasi_instantiateStreaming(response, imports) \
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.then(obj => { \
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setInstance(obj.instance); \
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try { \
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obj.instance.exports._start(); \
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} catch (e) { \
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if (e instanceof WASIExit) { \
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handleWASIExit(e); \
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} else { \
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} \
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} \
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}) \
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.catch(error => { \
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console.log('error! ' + error); \
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}); \
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");
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}
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